Unreal Engine Issues
Unreal Engine Issues
Particle disappears if it is using PSA_Velocity and setting custom time dilation 0
UE - Graphics Features - Dec 7, 2016A licensee reported some of their particles disappear when setting the actor's custom time dilation 0. This seems to happen when a particle is using PSA_Velocity as Screen Alignment. This repros in ...
Post Process AnimBP is no longer initialized in Persona Viewport
OLD - Anim - Jul 20, 2017Post Process AnimBPs used to be processed in the persona viewport. This could have been intentional. Occurs on? 4.14 - 3249277 - NO 4.15 - 3450819 - YES 4.16 - 3466753 - YES 4.17 - 3545186 - YES ...
Camera attached to a Spring Arm jitters when put at a +90 or -90 degree angle on the Y axis.
UE - Gameplay - Nov 18, 2016When a camera attached to a spring arm is turned at a +90 or -90 degree angle in the Y Axis (can't go any further) and turned, it can jitter and cause visual issues. Note: This occurs in the base ...
"Convert to Blueprint" removes ability to edit component properties
UE - Gameplay - Blueprint - Dec 4, 2018As noted by the user in the linked UDN question, this seems to be a problem with the PointLightComponent property on APointLight not having the VisibleAnywhere property descriptor. Also as noted, th ...
Shadow Quality regression on mobile for Movable Directional Lights
UE - Platform - Mobile - Oct 11, 2016Shadow quality from a movable directional light has lower resolution quality than the previous release of the engine. This is a regression in quality from 4.12.5 to 4.13. Tested with: Good Quality ...
Engine\Build\IOS includes an expired certificate
UE - Platform - Mobile - Jan 2, 2019\Engine\Build\IOS\AppleWorldwideDeveloperRelationsCA.pem is out of date. This causes a warning to appear when submitting app. Workaround: Install latest WWDR ( https://answers.unrealengine.co ...
Lighting Build Fails With High Density Foliage
UE - World Creation - Worldbuilding Tools - Foliage - Jan 16, 2018Trying to build lighting on a map with high density foliage will fail lighting build or cause the editor to crash. This occurs in 4.15, 4.16, 4.17, and 4.18. There have been multiple reports of this ...
Chained physics constraints do not work correctly when one constraint is limited
UE - Simulation - Physics - Aug 12, 2017A chain of physics constraints that includes a physics constraint that is set to Limited does not work correctly. When collision occurs, the attached actors start moving erratically. Regression?: N ...
GAS: Ability that destroys owning actor on activate causes crashes due to ABILITYLIST_SCOPE_LOCK
UE - Gameplay - Gameplay Ability System - Oct 31, 2023A GameplayAbility that destroys its owning actor inside ActivateAbility() causes a crash, because actor destruction will modify the ability list but ActivateAbility() is called within an ABILITYLIST ...
[CrashReport] UE4Editor_CoreUObject!TFastReferenceCollector<1,FGCReferenceProcessor<1>,FGCCollector<1>,FGCArrayPool,0>::ProcessObjectArray()
UE - Foundation - Core - UObject - Jul 19, 2017This is a common crash affecting users in 4.16. Over 100 users have been affected, although they have not provided additional information. Source Context 469 TokenStreamIndex++; 47 ...